JP2018169736A - Display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display that is reliable and suppresses a reduction in efficiency of vibration of the display.SOLUTION: A display comprises: a display panel that has a display part; an operation panel that is provided to cover the display panel and has an operation surface on the opposite side of the surface facing the display panel; vibrators 13a, 13b that are disposed on the operation panel; a support that is disposed on the opposite side of the operation surface of the operation panel while facing the operation panel with an interval; elastic support members 50a to 50d that are disposed between the operation panel and the support and can be elastically deformed in response to vibration of the vibrators 13a, 13b; and a wall member 60 that is disposed over the operation panel and the support to surround the display part. The wall member 60 includes a flexible wall member 61 having one end as a fixed end fixed to one of the operation panel and the support and the other end as a free end to suppress a reduction in efficiency of vibration of the display.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a display device that presents a tactile sensation by vibration.

  In recent years, portable information devices such as smartphones and tablet personal computers, various consumer devices such as home appliances such as microwave ovens, televisions, lighting fixtures, automatic teller machines, ticket vending machines, vending machines In various industrial devices such as the above, a touch panel that presents a tactile sensation due to vibration to an operator is being mounted.

  For example, in the prior art described in Patent Document 1, a tactile sensation providing unit that provides tactile sensation by vibration is disposed on the back surface of the panel opposite to the tactile sensation providing surface (operation surface) of the panel. A tactile sensation presentation device having a pressure control unit that controls the pressure in the space opposite to the tactile sensation presentation surface of the tactile sensation presentation unit when vibrated is disclosed. Ventilation holes are provided.

JP 2014-6672 A

  In the tactile sensation providing apparatus described above, the air pressure in the space in the tactile sensation providing apparatus can be reduced and the tactile sensation providing part can be vibrated efficiently by the vent holes provided in the housing. To reduce. If the ventilation holes are enlarged or the number is increased, dust easily enters the housing, which may adversely affect the display unit. Therefore, a configuration is disclosed in which the air holes are closed with a porous filter made of sponge, GORE-TEX (registered trademark) or the like in order to provide a dustproof function or a waterproof function. However, as a result of experiments by the present inventors, when the above porous filter is used, the atmospheric pressure in the space in the tactile sensation presentation device accompanying vibration suitable for tactile vibration having a frequency of about 30 Hz to 300 Hz and an amplitude of about 30 μm to 1000 μm. It has been found difficult to obtain good air permeability that can suppress changes. Therefore, in the above-described conventional tactile sensation providing apparatus, more power is required to vibrate with a desired amplitude, and thus the vibration efficiency by the vibrating body may be reduced and power consumption may be increased. An object of the present invention is to provide a highly reliable tactile transmission type display device that suppresses a decrease in vibration efficiency and exhibits a good tactile sensation.

  The display device of the present invention includes a substrate having a display unit, a vibrating body disposed on the substrate, a support disposed to face the substrate with a space therebetween, the substrate and the support. And an elastic support member that is elastically deformable with respect to the vibration of the vibrating body, and a wall member that is disposed so as to surround the display unit across the substrate and the support body. The wall member includes a flexible wall member having one end fixed to either the substrate or the support and the other end being a free end.

  The display device of the present invention is provided on a display panel having a display unit, an operation panel provided to cover the display panel, having an operation surface on the side opposite to the side facing the display panel, and the operation panel. The vibration body is disposed on the opposite side of the operation surface of the operation panel and is opposed to the operation panel with a space therebetween. The vibration body is disposed between the operation panel and the support body. An elastic support member that can be elastically deformed, and a wall member disposed so as to surround the display unit over the panel and the support, and the wall member has one end of the operation panel or the support body. It includes a flexible wall member that is a fixed end fixed to either one and the other end is a free end.

  According to the display device of the present invention, by providing the flexible wall member, it is possible to suppress the pressure fluctuation of the atmospheric pressure due to the vibrating body in the partial space surrounded by the wall member, so that the vibration efficiency by the vibrating body is reduced. Can be suppressed.

It is a top view which shows an example of the display apparatus of 1st Embodiment. It is sectional drawing which shows an example of the display apparatus of 1st Embodiment. It is an expanded sectional view explaining the flow of the air in the wall member vicinity. It is sectional drawing which shows an example of the display apparatus of 2nd Embodiment. It is an expanded sectional view explaining the flow of the air in the wall member vicinity. It is an expanded sectional view explaining a motion of a wall member.

  FIG. 1 is a plan view illustrating an example of the display device according to the first embodiment. FIG. 2 is a cross-sectional view showing an example of the display device of the first embodiment, and schematically shows a cross section including the vibrators 13a and 13b of the display device of FIG. In FIG. 2, the thickness direction of the display device is shown enlarged for explanation. A liquid crystal display device 1 that is an example of a display device includes a liquid crystal display panel 20 that is a display panel on the back of a transparent touch panel 10 that is an operation panel, and a backlight device that is a support on the back of the liquid crystal display panel 20. 30, and the touch panel 10, the liquid crystal display panel 20, and the backlight device 30 are accommodated in a housing 40.

  In the display device of the present invention shown in FIGS. 1 and 2, the substrate having a display unit such as a liquid crystal display unit is, for example, one main surface (back surface) side of a transparent protective plate 11 made of a glass substrate, a plastic substrate or the like. Further, the substrate has a composite configuration in which the contact detection unit 12 and the liquid crystal display panel 20 are stacked.

  Examples of the display panel including the display unit include a liquid crystal display panel 20 including a liquid crystal display unit as the display unit. However, the display panel is not limited to the liquid crystal display panel 20, and is an organic EL (Electro Luminescence) display panel or an inorganic EL. A self-luminous display panel such as a display panel or a light emitting diode (LED) display panel may be used.

  The vibrating bodies 13a and 13b are arranged on the outer peripheral portion (side portion) of the back surface of the transparent protective plate 11 constituting the substrate and on the outer side of the liquid crystal display panel 20 in plan view. Further, the vibrating bodies 13a and 13b are disposed at positions facing each other. In this case, vibrations by the vibrating bodies 13a and 13b are likely to be generated uniformly over the entire substrate. The vibrating bodies 13 a and 13 b may be disposed on the other main surface (front surface) side of the transparent protective plate 11.

  The support is a support substrate including the light guide plate 31 of the backlight device 30. And there exists an overhang | projection part (protrusion part) of the frame 32 in the peripheral part of the surface (light irradiation surface) facing the non-display surface 20b of the liquid crystal display panel 20 of the light-guide plate 31, and an elastic support member is in the overhang | projection part. The transparent protective plate 11 is supported via 50a, 50b, 50c, 50d.

  The contact detection part 12 which comprises the touch panel 10 is arrange | positioned in parallel with the space | interval in the thickness direction of the light-guide plate 31 with respect to the light-guide plate 31 of the backlight apparatus 30 which is a support substrate. In the touch panel 10, the operation surface 11 a is a surface opposite to the light guide plate 31 side of the transparent protection plate 11 (an operator-side surface, a viewer-side surface), and the contact detection unit 12 is the transparent protection plate 11. Is disposed on the back surface 11b opposite to the operation surface 11a side.

  The touch panel 10 is configured by disposing a contact detection unit 12 on the back surface 11 b of the transparent protective plate 11. The transparent protective plate 11 has, for example, a rectangular shape in plan view, and can be configured by a glass plate, a plastic plate, or the like. The planar view shape of the transparent protective plate 11 is not limited to a rectangular shape, and may be a triangular shape, a polygonal shape such as a pentagonal shape, a trapezoidal shape, a shape in which corners are curved in these shapes, and the like. May be a generally curvilinear shape such as a circular shape or an elliptical shape. The transparent protective plate 11 has an operation surface 11a that is operated by an operator touching with a finger F or a touch pen. There is a gap between the edge of the transparent protective plate 11 and the housing 40, so that air can flow.

  A contact detection unit 12 is provided on the back surface 11b of the transparent protective plate 11 opposite to the operation surface 11a. The contact detection unit 12 is in the form of a thin film, and for example, the planar view shape is a rectangular shape smaller than the transparent protective plate 11. The plan view shape of the contact detection unit 12 may be similar to various plan view shapes of the transparent protective plate 11 described above. The contact detection unit 12 can detect the position of the finger F or touch pen that has touched the operation surface 11a. As a detection method, a capacitance method, a resistance film method, or the like can be used. In the present embodiment, the contact detection unit 12 is disposed between the transparent protective plate 11 and the liquid crystal display panel 20, but the contact detection unit 12 may be built in the liquid crystal display panel 20. Alternatively, it may be provided outside the liquid crystal display device.

  In the display device of the present invention, the contact detection unit 12 is not necessarily required. For example, if the vibrating bodies 13a and 13b made of a piezoelectric body or the like are configured to detect displacement due to contact with a finger F, a touch pen, or the like, the contact detection unit 12 may be omitted.

  On the back surface 11 b of the transparent protective plate 11, vibration bodies 13 a and 13 b that are a plurality of vibration bodies are provided. For example, the vibrating bodies 13 a and 13 b are respectively provided along two opposing sides of the rectangular operation surface 11 a of the transparent protective plate 11. Further, the vibrating bodies 13a and 13b are arranged at point-symmetrical positions with respect to the center P of the operation surface 11a of the rectangular transparent protective plate 11 in plan view. The vibrating bodies 13a and 13b may be arranged so as to be in direct contact with the transparent protective plate 11 and transmit vibration directly to the transparent protective plate 11. However, the vibrating members 13a and 13b may be arranged on the transparent protective plate 11 with other members interposed therebetween. And vibrations may be transmitted indirectly. When the operator touches the operation surface 11a with a finger F or a touch pen, the contact detection unit 12 detects the contact position and vibrates the operation surface 11a with the vibrating bodies 13a and 13b based on the detection information. Vibration can be transmitted to the operator via

The vibrating bodies 13a and 13b are made of a piezoelectric body such as a ceramic piezoelectric body or a polymer piezoelectric body, an eccentric motor, a linear vibrator, a shape memory alloy, or the like. As the material of the ceramic piezoelectric body, barium titanate (BaTiO ₃ ), lead titanate (PbTiO ₃ ), lead zirconate titanate (Pb [Zr _x Ti _1-x ] O ₃ 0 <x <1 mixed crystal: PZT ), Potassium niobate (KNbO ₃ ), lithium niobate (LiNbO ₃ ), lithium tantalate (LiTaO ₃ ), sodium tungstate (Na _x WO ₃ ), zinc oxide (ZnO, Zn ₂ O ₃ ), Ba ₂ NaNb ₅ O ₅ , Pb ₂ KNb ₅ O ₁₅ , lithium tetraborate (Li ₂ B ₄ O ₇ ), sodium potassium niobate ((K, Na) NbO ₃ ), sodium bismuth titanate (Na _0.5 Bi _0.5 TiO ₃ ) or the like can be employed. Polyvinylidene fluoride (1,1-2 fluorinated ethane polymer: PVDF) or the like can be used as the material of the polymer piezoelectric material.

  The frequency of vibration generated in the vibrating bodies 13a and 13b is about 30 Hz to 300 Hz, and the tactile vibration that provides a good tactile sensation with a human finger is preferably about 150 Hz to 250 Hz. The amplitude of the vibration is about 30 μm to 1000 μm, and the tactile vibration that provides a good tactile sensation with a human finger is preferably about 50 μm to 150 μm. The external shape of the vibrating bodies 13a and 13b can be a shape of a columnar body such as a rectangular parallelepiped, a cube, a plate-shaped body, and a columnar body. The vibrating bodies 13a and 13b may be directly attached to the transparent protective plate 11, or may be indirectly attached via a vibration transmitting member such as metal or resin. Moreover, if it is a part which can vibrate the touch panel 10, attaching to the side surface etc. of the transparent protective board 11 etc. is also considered.

  A liquid crystal display panel 20 that is a display panel is disposed on the opposite side of the touch panel 10 from the operation surface 11a side. The liquid crystal display panel 20 has, for example, a rectangular shape smaller than the touch panel 10 in plan view, and the touch panel 10 is provided so as to cover the liquid crystal display panel 20. The planar view shape of the liquid crystal display panel 20 may be similar to various planar view shapes of the transparent protective plate 11 described above. The liquid crystal display panel 20 has a display surface 20a and a non-display surface 20b. The liquid crystal display panel 20 includes a display unit 20c at the center, and the contact detection unit 12 is positioned so as to cover the display surface 20a corresponding to the display unit 20c. Further, in the present embodiment, the liquid crystal display panel 20 is in contact with the back surface of the touch panel 10, but the liquid crystal display panel 20 may be disposed at a distance from the touch panel 10.

  A backlight device 30 serving as a support is provided so as to face the counter-display surface 20b of the liquid crystal display panel 20 with a space therebetween. The backlight device 30 includes a light guide plate 31, a frame body 32 disposed on the periphery of the light guide plate 31, and a conductor plate 33 on which the light guide plate 31 is placed and also functions as a ground conductor. The backlight device 30 is configured to emit light from a light source formed of an LED or the like built in the backlight device 30 in the direction of the liquid crystal display panel 20 via the light guide plate 31. The frame 32 and the conductor plate 33 are made of a metal such as aluminum.

  The space interval (height) between the liquid crystal display panel 20 and the backlight device 30 is preferably about 1 mm to 5 mm, and more preferably about 1 mm to 3 mm in terms of thickness reduction. With such a structure, the liquid crystal display panel 20 and the backlight device 30 are unlikely to be an obstacle to vibrations caused by the vibrators 13a and 13b.

  The housing 40 has, for example, a rectangular shape in plan view, and includes a bottom surface 40a at the center and a frame portion 40b that is a peripheral edge of the bottom surface 40a. On the bottom surface 40a, the backlight device 30, the liquid crystal display panel 20, and the touch panel 10 are disposed so as to overlap each other. The backlight device 30 is placed and fixed on the bottom surface 40 a of the housing 40. The frame portion 40b at the periphery of the bottom surface 40a protects the side surfaces of the backlight device 30, the liquid crystal display panel 20, and the touch panel 10. As a material of the housing 40, for example, plastic or metal can be used.

  An elastic support member is disposed on the back surface 11 b of the transparent protective plate 11 of the touch panel 10. In the present embodiment, elastic support members 50a, 50b, 50c, and 50d are arranged at the four corners of the rectangular transparent protective plate 11, respectively. As the elastic support members 50a to 50d, members made of a material that hardly displaces the vibration of the operation panel by being displaced following the vibrations of the vibrating bodies 13a and 13b made of rubber such as urethane rubber or silicone rubber, or resin are used. be able to. Further, a spring member such as a spring coil or a leaf spring may be used.

  These elastic support members 50a to 50d are arranged between the frame 32 of the backlight device 30 as a support and the transparent protective plate 11 as an operation panel. The elastic support members 50 a to 50 d support the transparent protective plate 11. The elastic support members 50 a to 50 d have one end in contact with the frame body 32 and the other end in contact with the back surface 11 b of the transparent protective plate 11. The elastic support members 50a to 50d are fixed and held on the frame 32 and the transparent protective plate 11 by an adhesive or the like so that the arranged positions do not move. In the case where the operation panel and the display panel are integrally formed, there is also a structure in which one end of the elastic support members 50a to 50d is fixed to the opposite display surface 20b of the display panel and the other end is fixed to the support. Is possible.

  When the liquid crystal display panel 20 is used as the display panel, the backlight device 30 can be used as a support. For example, a self-luminous type such as an organic EL (Electro Luminescence) display panel or a light emitting diode (LED) display panel can be used. When a display panel that does not require a backlight device including a light guide plate, such as a panel, is used, the housing 40 may be a support.

  A wall member 60 is provided between the back surface 11 b of the transparent protective plate 11 and the frame body 32 of the backlight device 30. The wall member 60 is disposed so as to surround the display unit 20 c of the liquid crystal display panel 20. That is, the wall member 60 is disposed so as to surround the display unit across the operation panel and the support. The wall member 60 is partitioned into a space inside the wall member 60 including the display unit 20c and a space outside the wall member 60, but at least a part of the wall member 60 is easily bent by vibrations of the vibrating bodies 13a and 13b. It is comprised with the flexible wall member 61 comprised by these. Of course, all the wall members 60 may be the flexible wall members 61. In the space surrounded by the transparent protective plate 11, the backlight device 30 and the wall member 60, the transparent protective plate 11 vibrates with the vibrations of the vibrating bodies 13 a and 13 b, and the transparent protective plate 11 with respect to the backlight device 30 The position is displaced. The flexible wall member 61 is made of a flexible material that can be bent. Further, there is a gap between the housing 40 and the touch panel 10, and the space outside the wall member 60 communicates with the outside air.

  The flexible wall member 61 includes, for example, a base 61a and a flexible linear body 61b that extends from the base 61a in the direction of the backlight device 30. The transparent protective plate 11 side of the base material 61 a is fixed to the transparent protective plate 11 and serves as a fixed end of the flexible wall member 61. One end of the flexible linear body 61 b is fixed to the base material 61 a, but the other end is a free end and is in contact with the backlight device 30. The flexible linear body 61b is composed of a plurality of fibrous members having a thickness of 10 μm to 300 μm. As a material of the flexible linear body 61b, resins such as polyethylene terephthalate (PET), triacetyl cellulose (TAC), polyvinyl chloride (PVC), polyvinyl alcohol (PVA), polypropylene (PP), silicone rubber, Rubbers such as urethane rubber and acrylic rubber can be used.

  In the present embodiment, the base material 61a is made of a flexible material such as polyurethane, silicone, or the like, or a cloth, and has a frame shape in plan view. The transparent protective plate 11 that is an operation panel is attached to the transparent protective plate 11 with an adhesive or the like. It is fixed. A substrate 61a and a backlight device in which a large number of flexible linear bodies 61b extending from the substrate 61a in the direction of the backlight device 30 are arranged in a brush shape on the substrate 61a and fixed to the transparent protective plate 11 The liquid crystal display panel 20 which is a display unit is disposed so as to surround 30. In addition, the natural length of the flexible wall member 61 including the flexible linear body 61b is longer than the distance between the transparent protective plate 11 and the backlight device 30 in a standard state where no operation is performed. Accordingly, at least a part of the flexible linear body 61 b is in contact with the backlight device 30. The interval between the adjacent flexible linear bodies 61b is not less than 10 μm and not more than 300 μm. The space inside the wall member 60 and the space outside the wall member 60 communicate with each other through the gap between the flexible linear bodies 61b. The wall thickness of the wall member 60 is about 0.01 mm to 0.3 mm. Thus, the wall member 60 which has air permeability and dust-proof property can be obtained by providing the flexible linear body 61b closely spaced and provided over a predetermined thickness. In the display device of the present invention, the substrate 61a is made of a resin, metal, ceramic, or the like that does not have flexibility, and the flexible linear body 61b is fixed to the substrate 61a by an adhesive or the like. May be.

  FIG. 3 is an enlarged cross-sectional view for explaining the air flow in the vicinity of the wall member 60. In many cases, the liquid crystal display panel 20 and the backlight device 30 have a highly airtight structure so that dust does not enter the space S between the liquid crystal display panel 20 and the backlight device 30. If a display device that provides tactile sensation by attaching the vibrators 13a and 13b to a simple display device is configured, a highly airtight space S between the liquid crystal display panel 20 and the backlight device 30 due to vibration of the vibrators 13a and 13b. The pressure fluctuation of the atmospheric pressure increases. Further, the pressure fluctuation of the atmospheric pressure in the space S between the liquid crystal display panel 20 and the backlight device 30 may be transmitted to a portion other than the panel such as the housing 40 that should provide a tactile sensation, and the usability may be impaired. Moreover, it becomes difficult to efficiently vibrate the display device due to the diffusion and attenuation of the vibration.

  Therefore, the wall member 60 includes a flexible wall member 61 having one end fixed to either the operation panel or the support and the other end being a free end. The touch panel 10 is displaced in a direction perpendicular to the operation surface 11a by the vibrating bodies 13a and 13b. However, the flexible wall member 61 having air permeability is deformed according to the displacement of the transparent protective plate 11, and the operation panel and the support body are deformed. The pressure fluctuation of the atmospheric pressure due to the volume change of the space S surrounded by the wall member 60 is suppressed. Furthermore, since one end of the flexible wall member 61 is a free end and is not fixed, the vibration of the vibrating bodies 13a and 13b is difficult to propagate to the housing 40 or the like via the wall member 60 or the space S. Become. Therefore, the vibrations of the vibrating bodies 13a and 13b are not diffused to a portion such as the housing 40, and the touch panel 10 can be vibrated efficiently.

  Further, a minute volume change occurs in the space S inside the wall member 60 due to the vibration of the vibrating bodies 13a and 13b provided on the transparent protective plate 11, but when the airtightness of the space S is high, The pressure fluctuation of the atmospheric pressure becomes large, and the vibration is transmitted to the housing 40, or vibration energy is easily diffused and attenuated by pressure loss or the like. Therefore, the space S and the wall member 60 are configured such that the flexible wall member 61 includes a base 61a, a plurality of flexible linear bodies 61b each having one end fixed to the base 61a and the other end being a free end. It is set as the structure which communicated with the space outside. As a result, as indicated by the arrows in FIG. 3, the air whose volume has changed in the space S flows through the wall member 60, and the pressure fluctuation of the atmospheric pressure in the space S is suppressed.

  As described above, the pressure fluctuation of the atmospheric pressure in the space inside the wall member 60 due to the vibration of the vibrating bodies 13a and 13b can be alleviated and the attenuation of the vibration of the transparent protective plate 11 as the operation panel can be suppressed. The plate 11 can be vibrated efficiently. Therefore, it is possible to suppress an increase in power for driving the vibrating bodies 13a and 13b.

  In the present embodiment, all the wall members 60 are the flexible wall members 61, but if at least a part of the wall members 60 includes the flexible wall members 61, the pressure of the atmospheric pressure in the space S Variation is suppressed. Moreover, in this embodiment, the base material 61a is fixed to the transparent protective plate 11, and the flexible linear body 61b is extended toward the backlight apparatus 30 from the base material 61a. Although the solid body 61b is in contact with the backlight device 30, the base material 61a is fixed to the backlight device 30, and the flexible linear body 61b is extended toward the transparent protective plate 11 so as to be flexible. A configuration in which the linear body 61b contacts the transparent protective plate 11 is also possible. Further, a part of the wall member 60 has the base 61a fixed to the transparent protective plate 11, the flexible linear body 61b extends toward the backlight device 30, and the flexible linear body 61b. Is configured to contact the backlight device 30, and the other part of the wall member 60 is such that the base material 61 a is fixed to the backlight device 30, and the flexible linear body 61 b extends toward the transparent protective plate 11. The flexible linear body 61b may be in contact with the transparent protective plate 11. Furthermore, the base material 61a is fixed to the transparent protective plate 11, and the flexible linear member 61b is configured to extend toward the backlight device 30, and the base material 61a is the backlight device. 30 and the flexible linear member 61b configured to extend toward the transparent protective plate 11 constitutes a wall member 60, and the flexible linear members 61b are connected to each other. You may arrange | position so that it may overlap by planar view.

  FIG. 4 is a cross-sectional view illustrating an example of a display device according to the second embodiment. The aspect of the wall member 60 is different from the configuration of FIG. At least a part of the wall member 60 is composed of a flexible wall member 62 made of a material that is easily bent. The flexible wall member 62 includes a base material 62a and a warm wall-like wall member 62b. The base material 62a is being fixed to the outer peripheral side surface of the transparent protective plate 11 which is an operation panel. The warm wall-shaped wall member 62b extends from the base material 62a toward the backlight device 30. The end of the warm wall-shaped wall member 62b opposite to the base material 62a extends to the upper surface or the side surface of the backlight device 30, and the flexible wall member 62 extends over the transparent protective plate 11 and the backlight device 30. Since the liquid crystal display panel 20 is disposed so as to surround the liquid crystal display panel 20, dust can be prevented from entering the space S between the liquid crystal display panel 20 and the backlight device 30. The warm wall-shaped wall member 62b can be made of a material that is lightweight and does not easily attenuate the vibrations of the vibrators 13a and 13b. It can consist of a film-like or sheet-like member. The base material 62a and the warm wall-shaped wall member 62b may be integrally formed.

  FIG. 5 is an enlarged cross-sectional view for explaining the air flow in the vicinity of the wall member 60 in the second embodiment. The end of the warm wall-shaped wall member 62b opposite to the base 62a is a free end, and there is a gap between the warm wall-shaped wall member 62b and the side surface of the backlight device 30, so that air can flow. Yes. As indicated by the arrows in FIG. 5, air can flow through the gap, so that the pressure change of the atmospheric pressure in the space S due to the vibration of the vibrating bodies 13a and 13b is alleviated, and the vibration of the transparent protective plate 11 that is the operation panel is reduced. Attenuation can be further suppressed, and the transparent protective plate 11 can be vibrated more efficiently.

  FIG. 6 is an enlarged cross-sectional view for explaining the movement of the wall member 60 in the second embodiment. The end of the warm wall-shaped wall member 62b opposite to the base material 62a may be in contact with the backlight device 30. Even in such a case, the end of the warm wall-like wall member 62b opposite to the base material 62a is a free end, so that it bends as shown by a two-dot chain line along with the vibration of the transparent protective plate 11. Due to the deformation, the pressure change of the atmospheric pressure in the space S can be mitigated by the shape change of the warm wall-shaped wall member 62b. Therefore, attenuation of the vibration of the transparent protective plate 11 can be further suppressed, and the transparent protective plate 11 can be vibrated more efficiently.

  In the second embodiment, the base material 62 a is fixed to the transparent protective plate 11. However, the base material 62 a is fixed to the backlight device 30, and the warm wall-like wall member 62 b extends to the transparent protective plate 11. May be. Even in such a configuration, the pressure change of the atmospheric pressure in the space S due to the vibration of the vibrating bodies 13a and 13b is alleviated, the attenuation of the vibration of the transparent protective plate 11 that is the operation panel is further suppressed, and the transparent protective plate 11 is more efficient. Can vibrate well.

  In the display device of the present invention, the liquid crystal display panel 20 is disposed in the space S inside the wall member 60, and the wall member 60 functions as a protective member of the liquid crystal display panel 20, and can also function as a dustproof member. . Moreover, it is preferable that the elastic support members 50a to 50d and the vibrating bodies 13a and 13b are disposed in the space S inside the wall member 60, and the wall member 60 functions as a protective member thereof, and further as a dustproof member. Can also work. The elastic support members 50 a to 50 d and the vibrating bodies 13 a and 13 b are not necessarily arranged in the space S inside the wall member 60, and may be arranged outside the wall member 60.

  Although the present invention has been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 10 Touch panel 11 Transparent protective plate 11a Operation surface 11b Back surface 12 Contact detection part 13a, 13b Vibrating body 20 Liquid crystal display panel 20a Display surface 20b Non-display surface 20c Display part 30 Backlight apparatus 31 Light guide plate 32 Frame 33 Conductor Plate 40 Case 40a Bottom 40b Frame 50a, 50b, 50c, 50d Elastic support member 60 Wall member 61, 62 Flexible wall member 61a, 62a Base material 61b Flexible linear body 62b Warm-up wall member

Claims (7)

A substrate having a display unit;
A vibrator disposed on the substrate;
A support disposed opposite to the substrate at an interval;
An elastic support member disposed between the substrate and the support body and elastically deformable with respect to the vibration of the vibration body;
A wall member disposed so as to surround the display unit across the substrate and the support;
The display device according to claim 1, wherein the wall member includes a flexible wall member having one end fixed to either the substrate or the support and the other end being a free end.   The display according to claim 1, wherein the flexible wall member includes a base material including the fixed end and a plurality of flexible linear bodies extending from the base material. apparatus.   The display device according to claim 2, wherein a thickness of the flexible linear body is not less than 10 μm and not more than 300 μm.   The display device according to claim 2, wherein an interval between the adjacent flexible linear bodies is 10 μm or more and 300 μm or less.   The display device according to claim 1, wherein the display unit is a liquid crystal display unit.   The display device according to claim 5, wherein the support includes a backlight device. A display panel having a display unit;
An operation panel provided to cover the display panel and having an operation surface on the side opposite to the side facing the display panel;
A vibrator disposed on the operation panel;
On the opposite side to the operation surface of the operation panel, a support body disposed to face the operation panel with a space therebetween,
An elastic support member disposed between the operation panel and the support body and capable of elastic deformation with respect to vibration of the vibration body;
A wall member disposed so as to surround the display unit across the operation panel and the support;
The display device according to claim 1, wherein the wall member includes a flexible wall member having one end fixed to either the operation panel or the support and the other end being a free end.

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